56897089 has 2 divisors, whose sum is σ = 56897090. Its totient is φ = 56897088.

The previous prime is 56897051. The next prime is 56897107. The reversal of 56897089 is 98079865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54272689 + 2624400 = 7367^2 + 1620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56897089 is a prime.

It is not a weakly prime, because it can be changed into another prime (56892089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28448544 + 28448545.

It is an arithmetic number, because the mean of its divisors is an integer number (28448545).

Almost surely, 2^56897089 is an apocalyptic number.

It is an amenable number.

56897089 is a deficient number, since it is larger than the sum of its proper divisors (1).

56897089 is an equidigital number, since it uses as much as digits as its factorization.

56897089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 56897089 is about 7543.0159087728. The cubic root of 56897089 is about 384.6183636005.

The spelling of 56897089 in words is "fifty-six million, eight hundred ninety-seven thousand, eighty-nine".